41.1.1. Prof. Pradip Mandal

Try these first

1. 1.

   What role does a coupling capacitor play in an amplifier?

   Hint

   Think about the nature of AC vs DC.

2. 2.

   Define a pole in the context of amplifier frequency response.

   Hint

   Consider where the gain begins to fall.

3. 3.

   What does a coupling capacitor do in an amplifier?

   • Blocks AC signals
   • Allows DC signals
   • Blocks DC signals and allows AC signals
   • None of the above

   Hint

   Think about what amplifiers need to process.

4. 4.

   True or False: The Thevenin equivalent simplifies complex circuits into a single voltage source and resistance.

   • True
   • False

   Hint

   What does Thevenin's theorem achieve?

5. 5.

   Design a CE amplifier circuit. If the components are R1 = 1kΩ, C1 = 100nF, and the gain is required to be 10, derive the transfer function and identify the poles.

   Hint

   Focus on summing the effective resistances and capacitances in the circuit.

6. 6.

   Given a CS amplifier with load capacitance C2 = 33pF and a target low cutoff frequency of f = 1kHz, calculate the required input capacitance.

   Hint

   Use the frequency cut-off formula to relate R and C, focusing on the characteristics of capacitive loads.